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CBSE Notes
Class 10
Maths
Chapter 7 Coordinate Geometry

CBSE Notes Class 10 Maths Chapter 7 Coordinate Geometry

1.0Introduction to Coordinate Geometry

Coordinate Geometry, also known as Cartesian Geometry, is a study of geometry using coordinates. In this chapter, we focus on the Cartesian coordinate system and distance formula to solve algebraically geometric problems. This CBSE Notes for Class 10 Would give an added advantage to the students.

2.0Download CBSE Notes for Class 10 Maths Chapter 7: Coordinate Geometry - Free PDF!!

Hey there! Looking to ace Coordinate Geometry in your Class 10 Maths? These free CBSE notes for Chapter 7 will give you a solid understanding of the concepts.

Class 10 Maths Chapter 7 Revision Notes:

3.0CBSE Class 10 Maths Chapter 7 Coordinate Geometry - Revision Notes

What is the Cartesian Coordinate System?

  1. It is a two-dimensional Cartesian coordinate system in which the position of any point can be defined with the aid of two perpendicular lines, and these lines are called axes.
  • The horizontal axis is named as the x-axis or Abscissa.
  • The y-axis is the vertical axis or Ordinate. 
  1. If the x-axis and the y-axis intersect at a point, such an intersection is called origin. The origin is denoted by the letter O with the coordinate (0, 0).
  2. Any point in the coordinate plane is represented as P(x, y), where x denotes the distance from the origin along the x-axis and y is the distance from the origin along the y-axis.

Quadrants and coordinates

The Distance Formula 

In maths, the distance formula is used to find the distance between two points on the cartesian system, for example A(x1,y1) and B(x2,y2). The distance is always positive. The formula to find the distance between these points: 

AB=(x2​−x1​)2+(y2​−y1​)2​

The distance is two points if any one point is the origin.  AB=(x)2+(y)2​


Example 1: Find the distance between P(2, 6) and Q(8, 3) using the distance formula. 

Solution:

PQ=(8−2)2+(3−6)2​=36+9​=45​=35​


Example 2: Find the point on the y-axis which is equidistant from A(2, 4) and B(4, 8). 

Solution: The point is on the y-axis, hence the coordinates will be (0, y)

(0−2)2+(y−4)2​=(0−4)2+(y−8)2​

Squaring both sides,

4 + y2 - 8y + 16 = 16 + y2 - 16y + 64 

-8y + 16y = 64 - 4

8y = 60 

y = 7.5

Note: If the given point is on the x-axis, then the y-coordinate will be 0 and vice-versa. 

Section Formula 

Section formula is used to find the coordinates of a line segment. For example, in the given figure, C(x, y) is the point cutting line segments A(x1, y1) and B(x2, y2) in the ratio m and n.

Section formula

X=m+nm×x2​+n×x1​​

y=m+nm×y2​+n×y1​​

Here, (x, y) are the coordinates of C. 

Midpoint Formula: 

When point C cuts the line segment AB in two equal parts, meaning m = n, then we can use another formula that is:

X=2x2​+x1​​

y=2y2​+y1​​

Example: Find the coordinates of a point R(x, y) which is cutting the line segment P(2, 4) and Q(4, 8) in the ratio of 2 and 4. 

Solution:

X=2+42×4+4×2​=68+8​=38​

 y=2+42×8+4×4​=616+16​=316​

 Coordinates of P(38​,316​). 

Example: Find the ratio of the point Q that is on the y-axis cutting the line segment R(5, 7) and P(9, 3). 

Solution: Let the ratio be K : 1.

The point Q is on the y-axis; hence, Q(0, y)

Coordinates of Q 

0=K+1k×9+1×5​

k9+15 = 0 

K = 9/5

Hence, The ratio is 9 : 5 

4.0Key Features of CBSE Maths Notes for Class 10 Chapter 7

  • The notes are well aligned with the latest curriculum suggested by CBSE. 
  • Every concept is simplified and explained with simple and easy language, making these notes ideal for self-learning. 
  • The step-by-step guide is provided with every concept of coordinate geometry to ensure better understanding.

Chapter-wise CBSE Notes for Class 10 Maths :

Class 10 Maths Chapter 1 - Real Numbers Notes

Class 10 Maths Chapter 2 - Polynomials Notes

Class 10 Maths Chapter 3 - Linear Equations In Two Variables Notes

Class 10 Maths Chapter 4 - Quadratic Equations Notes

Class 10 Maths Chapter 5 - Arithmetic Progressions Notes

Class 10 Maths Chapter 6 - Triangles Notes

Class 10 Maths Chapter 7 - Coordinate Geometry Notes

Class 10 Maths Chapter 8 - Introduction To Trigonometry Notes

Class 10 Maths Chapter 9 - Some Applications of Trigonometry Notes

Class 10 Maths Chapter 10 - Circles Notes

Class 10 Maths Chapter 11 - Areas Related To Circles Notes

Class 10 Maths Chapter 12 - Surface Areas and Volumes Notes

Class 10 Maths Chapter 13 - Statistics Notes

Class 10 Maths Chapter 14 - Probability Notes



Chapter-wise NCERT Solutions Class 10 Maths:

Chapter 1 - Real Numbers

Chapter 2 - Polynomials

Chapter 3 - Linear Equations In Two Variables

Chapter 4 - Quadratic Equations

Chapter 5 - Arithmetic Progressions

Chapter 6 - Triangles

Chapter 7 - Coordinate Geometry

Chapter 8 - Introduction To Trigonometry

Chapter 9 - Some Applications of Trigonometry

Chapter 10 - Circles

Chapter 11 - Areas Related To Circles

Chapter 12 - Surface Areas and Volumes

Chapter 13 - Statistics

Chapter 14 - Probability

Frequently Asked Questions

It can solve geometric problems algebraically and is widely used in computer graphics, navigation, and engineering.

Negative coordinates mean that the point will be on the left-hand side of the y-axis (x-coordinate negative) or the bottom of the x-axis.

The distance formula applies to real life as it gives several assumptions and applications in maths with real-life everyday problems related to location, distance, and space.

The origin, or the coordinates (0, 0), is a reference point from which the coordinates of every other point in the Cartesian plane are measured.

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